Experimental Researches Regarding the Thermodynamic Activities in the Binary Pb-Sb Alloy System
| Autor: | Mihai Buzatu, Nicolae Serban, Stefan Burciu, Gheorghe Iacob, Florentina Niculescu, Dragos Marcu, Ionuţ Mircea Petrescu |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Alloy Metallurgy Metals and Alloys Analytical chemistry chemistry.chemical_element 02 engineering and technology Electrolyte Tungsten engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Reference electrode Electrical contacts 0104 chemical sciences chemistry Electrode Materials Chemistry engineering Galvanic cell Binary system 0210 nano-technology |
| Zdroj: | Journal of Phase Equilibria and Diffusion. 38:700-706 |
| ISSN: | 1863-7345 1547-7037 |
| Popis: | We have determined the thermodynamic activity of Pb and Sb in the Pb-Sb binary system. For the experiments, we used a galvanic cell in which the measuring electrode was made of Pb-Sb alloys with different chemical compositions. The reference electrode was manufactured from pure lead, and a mixture of salts (35% KCl, 17% NaCl and 48% PbCl2) was used as an electrolyte, which had a melting temperature of 399 °C (672 K). Tungsten wires were used for the contact conductors of the electrodes, and platinum wires were used for the electrical contacts between the measurement instrument and the contact conductors. The variations of activity coefficients depending on its atomic fraction were calculated for the Pb and Sb in the Pb-Sb binary alloy system. The experimental measurements were performed at a temperature of 650 °C (923 K). The obtained data are reliable and consistent, and now, based on these, thermodynamic functions can be obtained that can help the scientific community to correctly describe the behavior of the Pb-Sb binary alloy system. |
| Databáze: | OpenAIRE |
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